Display screen or portion thereof having a graphical user interface for a link to system tools



The sole FIGURE is a front view of a display screen or portion thereof having a graphical user interface for a link to system tools showing our new design.

The broken lines depict portions of the display screen or portion thereof having a graphical user interface for a link to system tools in which the design is embodied that form no part of the claimed design. 

CLAIM The ornamental design for display screen or portion thereof having a graphical user interface for a link to system tools, as shown and described. 